155471641 has 4 divisors (see below), whose sum is σ = 167431012. Its totient is φ = 143512272.

The previous prime is 155471633. The next prime is 155471653. The reversal of 155471641 is 146174551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100400400 + 55071241 = 10020^2 + 7421^2 .

It is a cyclic number.

It is not a de Polignac number, because 155471641 - 2³ = 155471633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155471597 and 155471606.

It is not an unprimeable number, because it can be changed into a prime (155471621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5979666 + ... + 5979691.

It is an arithmetic number, because the mean of its divisors is an integer number (41857753).

Almost surely, 2^155471641 is an apocalyptic number.

It is an amenable number.

155471641 is a deficient number, since it is larger than the sum of its proper divisors (11959371).

155471641 is a wasteful number, since it uses less digits than its factorization.

155471641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959370.

The product of its digits is 16800, while the sum is 34.

The square root of 155471641 is about 12468.8267691872. The cubic root of 155471641 is about 537.7128240316.

The spelling of 155471641 in words is "one hundred fifty-five million, four hundred seventy-one thousand, six hundred forty-one".